1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #include <sys/types.h> 34 #if defined(_KERNEL) 35 #include <sys/systm.h> 36 #else 37 #include <string.h> 38 #include <stddef.h> 39 #endif 40 41 /* 42 * Return the ptr in sptr at which the character c1 appears; 43 * or NULL if not found in n chars; don't stop at \0. 44 */ 45 void * 46 memchr(const void *sptr, int c1, size_t n) 47 { 48 if (n != 0) { 49 unsigned char c = (unsigned char)c1; 50 const unsigned char *sp = sptr; 51 52 do { 53 if (*sp++ == c) 54 return ((void *)--sp); 55 } while (--n != 0); 56 } 57 return (NULL); 58 } 59